/Engine/Plugins/Experimental/MotoSynth/Source/MotoSynth/Public/MotoSynthSourceAsset.h
ISubmixBufferListener.
virtual void OnNewSubmixBuffer ( const [USoundSubmix](API\Runtime\Engine\Sound\USoundSubmix) * OwningSubmix, float * AudioData, int32 NumSamples, int32 NumChannels, const int32 SampleRate, double AudioClock )